Alert archive / New Jersey / Special Weather Statements in 2017

Special Weather Statement, NWS Philadelphia/Mount Holly

August 2, 2017Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 2, 2017, 12:31 PM EDT for Morris County, New Jersey. It was in force for 29 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 2, 2017, 12:31 PM EDT (16:31 UTC)
Expired
Aug 2, 2017, 1:00 PM EDT
In force
29 min
Issued by
NWS Philadelphia/Mount Holly

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 16:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 2, 12:35 PM EDTHAIL 0.25Rockaway, NJPEA-SIZED HAIL
Aug 2, 12:35 PM EDTHAIL 0.25Rockaway, NJPEA-SIZED HAIL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 4.5 hours before the alert went out and 126 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2017-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 823 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2017-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
823 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1051 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

894 
WWUS81 KPHI 021631
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
1231 PM EDT WED AUG 2 2017

NJZ008-021700-
Morris-
1231 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN MORRIS COUNTY...

At 1231 PM EDT, a strong thunderstorm was located over Lake Telemark,
or 9 miles southwest of Pompton Lakes, moving northeast at 10 mph.

Winds up to 30 mph and dime size hail are possible with this storm.

Locations impacted include...
Lincoln Park, Kinnelon, Boonton, Butler, Rockaway, Morris Plains,
Mountain Lakes, Riverdale, Parsippany, Pequannock Township, Lake
Telemark, Green Pond and White Meadow Lake.

Heavy rainfall is also occurring with this storm, and may cause 
localized flooding. Do not drive your vehicle through flooded 
roadways.

Frequent cloud to ground lightning is also occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4091 7433 4086 7433 4082 7445 4098 7458
      4105 7445 4102 7443 4103 7442 4102 7439
      4100 7429 4097 7428 4092 7429 4091 7427
      4090 7427
TIME...MOT...LOC 1631Z 235DEG 7KT 4094 7445 

$$

LF

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 2, 12:28 PM EDTAreal Flood AdvisoryPHIMercer4 hr
Aug 2, 12:37 PM EDTSpecial Weather StatementPHIMercer38 min
Aug 2, 12:43 PM EDTAreal Flood AdvisoryPHIMiddlesex4 hr
Aug 2, 1:00 PM EDTSpecial Weather StatementPHIMorris30 min
Aug 2, 1:02 PM EDTAreal Flood AdvisoryPHIMorris5 hr
Aug 2, 1:32 PM EDTSpecial Weather StatementPHIMorris28 min
Aug 2, 2:01 PM EDTAreal Flood AdvisoryPHIHunterdon4 hr
Aug 2, 2:04 PM EDTSevere Thunderstorm WarningPHIHunterdon41 min
Aug 2, 2:09 PM EDTSpecial Weather StatementPHICamden51 min
Aug 2, 2:10 PM EDTFlash Flood WarningPHIMorris4 hr
Aug 2, 2:18 PM EDTSpecial Weather StatementPHIWarren42 min
Aug 2, 2:26 PM EDTSpecial Weather StatementPHIBurlington49 min
Aug 2, 2:35 PM EDTSpecial Weather StatementPHIBurlington40 min
Aug 2, 2:42 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Somerset4 hr
Aug 2, 2:45 PM EDTAreal Flood AdvisoryPHIWarren4 hr
Aug 2, 2:46 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean44 min
Aug 2, 2:48 PM EDTSevere Thunderstorm WarningPHIWarren27 min
Aug 2, 2:55 PM EDTAreal Flood AdvisoryPHIBurlington, Monmouth, Ocean5 hr
Aug 2, 3:04 PM EDTSevere Thunderstorm WarningPHIWarren41 min
Aug 2, 3:06 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Sussex, Warren4 hr
Aug 2, 3:16 PM EDTSpecial Weather StatementPHIBurlington29 min
Aug 2, 3:20 PM EDTAreal Flood AdvisoryPHIBurlington, Ocean4 hr
Aug 2, 3:32 PM EDTSpecial Weather StatementPHIWarren43 min
Aug 2, 3:33 PM EDTSpecial Weather StatementPHIMonmouth42 min
Aug 2, 3:36 PM EDTSpecial Weather StatementPHIUnion39 min
Aug 2, 3:39 PM EDTSpecial Weather StatementPHIMiddlesex51 min
Aug 2, 3:50 PM EDTSpecial Weather StatementPHISussex25 min
Aug 2, 3:58 PM EDTAreal Flood AdvisoryPHIBurlington, Mercer, Middlesex, Monmouth, Morris, Somerset4 hr
Aug 2, 4:06 PM EDTSpecial Weather StatementPHIGloucester, Salem39 min
Aug 2, 4:09 PM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Aug 2, 4:15 PM EDTSpecial Marine WarningPHI60 min
Aug 2, 4:27 PM EDTAreal Flood AdvisoryPHICamden, Gloucester, Salem4 hr
Aug 2, 4:29 PM EDTSpecial Weather StatementPHICumberland46 min
Aug 2, 4:39 PM EDTSpecial Weather StatementPHISomerset36 min
Aug 2, 4:48 PM EDTSpecial Weather StatementPHICamden42 min
Aug 2, 5:11 PM EDTSpecial Weather StatementPHICumberland34 min
Aug 2, 5:15 PM EDTSpecial Marine WarningPHI60 min
Aug 2, 5:21 PM EDTSevere Thunderstorm WarningPHIAtlantic, Camden, Cumberland, Gloucester39 min
Aug 2, 5:23 PM EDTSpecial Weather StatementPHIGloucester37 min
Aug 2, 5:28 PM EDTAreal Flood AdvisoryPHIAtlantic, Camden, Cumberland, Gloucester, Salem4 hr
Aug 2, 5:46 PM EDTAreal Flood AdvisoryPHIMorris59 min
Aug 2, 6:02 PM EDTSpecial Marine WarningPHI58 min
Aug 2, 6:11 PM EDTSpecial Marine WarningPHI64 min
Aug 2, 6:52 PM EDTSpecial Marine WarningPHI53 min
Aug 2, 6:52 PM EDTSpecial Weather StatementPHICape May38 min
Aug 2, 12:09 PM EDTSpecial Weather StatementPHIPhiladelphia36 min
Aug 2, 12:11 PM EDTSpecial Weather StatementPHIMonroe34 min
Aug 2, 12:39 PM EDTAreal Flood AdvisoryPHIMonroe4 hr
Aug 2, 12:45 PM EDTAreal Flood AdvisoryPHICarbon, Monroe4 hr
Aug 2, 12:52 PM EDTSpecial Weather StatementPHIMonroe23 min
Aug 2, 12:53 PM EDTSpecial Weather StatementPHICarbon37 min
Aug 2, 12:55 PM EDTSpecial Weather StatementPHIDelaware35 min
Aug 2, 1:08 PM EDTSpecial Weather StatementPHIPhiladelphia37 min
Aug 2, 1:26 PM EDTSpecial Weather StatementPHIDelaware34 min
Aug 2, 1:30 PM EDTSevere Thunderstorm WarningPHIChester, Delaware, Montgomery, Philadelphia30 min
Aug 2, 1:36 PM EDTSpecial Weather StatementPHIBucks39 min
Aug 2, 1:48 PM EDTFlash Flood WarningPHIMontgomery4 hr
Aug 2, 1:49 PM EDTSpecial Weather StatementPHILehigh41 min
Aug 2, 1:50 PM EDTSpecial Weather StatementPHIPhiladelphia25 min
Aug 2, 2:09 PM EDTSevere Thunderstorm WarningPHIBucks, Lehigh, Montgomery51 min
Aug 2, 2:16 PM EDTAreal Flood AdvisoryPHIBerks4 hr
Aug 2, 2:27 PM EDTAreal Flood AdvisoryPHIBucks, Chester, Montgomery4 hr
Aug 2, 2:37 PM EDTSpecial Weather StatementPHIBerks38 min
Aug 2, 3:12 PM EDTSpecial Weather StatementPHIMontgomery48 min
Aug 2, 3:34 PM EDTSpecial Weather StatementPHIChester26 min
Aug 2, 4:23 PM EDTSpecial Weather StatementPHIMonroe37 min
Aug 2, 4:40 PM EDTSpecial Weather StatementPHIPhiladelphia50 min
Aug 2, 6:00 PM EDTSpecial Weather StatementPHIKent30 min
Aug 2, 6:21 PM EDTSpecial Weather StatementPHIQueen Anne's39 min
Aug 2, 6:28 PM EDTAreal Flood AdvisoryPHIKent, Queen Anne's4 hr
Aug 2, 6:55 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's35 min
Aug 2, 7:30 PM EDTSpecial Weather StatementPHICaroline, Queen Anne's45 min
Aug 2, 7:58 PM EDTSevere Thunderstorm WarningPHICaroline47 min
Aug 2, 1:44 PM EDTFlash Flood WarningPHINew Castle4 hr
Aug 2, 3:16 PM EDTAreal Flood AdvisoryPHIKent7 hr
Aug 2, 6:27 PM EDTSpecial Weather StatementPHIKent33 min

Nearby

Special Weather Statements in New Jersey, 2017Every special weather statement in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.